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A colorless, transparent and self-healing polyurethane elastomer modulated by dynamic disulfide and hydrogen bonds
Wang, Xue1; Zhang, Huijuan1; Yang, Biao1; Wang, Liguo2,3; Sun, Hui1
2020-04-21
Source PublicationNEW JOURNAL OF CHEMISTRY
ISSN1144-0546
Volume44Issue:15Pages:5746-5754
Abstract

Self-healing polyurethanes (PUs) represent a new type of functional material which are highly desirable for applications such as surface protection coatings and transparent films. However, it is still challenging to obtain self-repairable PUs with good mechanical properties and excellent optical properties. Herein, in view of molecular design, a self-healing thermoplastic polyurethane (TPU) was designed with polytetramethylene ether glycol (PTMEG) as the soft segment and aliphatic isocyanate (m-xylylene diisocyanate, XDI) and aliphatic disulfide (bis(2-hydroxyethyl)disulfide, HEDS) as the hard segment. The TPU exhibited widely tunable mechanical properties, i.e., tensile stress values of 3.51-8.12 MPa with elongation at break values of 825-1320%. The cooperation of dynamic disulfide bonds and hydrogen bonding endowed the TPU elastomer with self-healing capacity and a self-healing efficiency of about 39% at a moderate temperature. Both the amorphous phase structure and XDI chemical structure contributed to a colorless, transparent and anti-yellowing TPU film with nearly 97% transparency and long-term optical stability. The tough, colorless and transparent self-healable elastomers have wide applications in optical and protective fields, including in automotive laminated glass, flexible displays, printers, and photographic equipment cleaning scrapers.

DOI10.1039/c9nj06457e
Language英语
WOS KeywordShape-memory ; Mechanical Performance ; Temperature ; Robust
Funding ProjectNational Natural Science Foundation of China[21104040] ; National Natural Science Foundation of China[51473007] ; National Natural Science Foundation of China[31570575] ; Construction of Scientific Research Team of Beijing Technology and Business University[19005902015]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; Construction of Scientific Research Team of Beijing Technology and Business University
WOS IDWOS:000531211600013
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40480
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Huijuan
Affiliation1.Beying Technol & Business Univ, Sch Mat Sci & Mech Engn, Beijing 100048, Peoples R China
2.Chinese Acad Sci, Inst Proc & Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xue,Zhang, Huijuan,Yang, Biao,et al. A colorless, transparent and self-healing polyurethane elastomer modulated by dynamic disulfide and hydrogen bonds[J]. NEW JOURNAL OF CHEMISTRY,2020,44(15):5746-5754.
APA Wang, Xue,Zhang, Huijuan,Yang, Biao,Wang, Liguo,&Sun, Hui.(2020).A colorless, transparent and self-healing polyurethane elastomer modulated by dynamic disulfide and hydrogen bonds.NEW JOURNAL OF CHEMISTRY,44(15),5746-5754.
MLA Wang, Xue,et al."A colorless, transparent and self-healing polyurethane elastomer modulated by dynamic disulfide and hydrogen bonds".NEW JOURNAL OF CHEMISTRY 44.15(2020):5746-5754.
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